Patent US2834181A successfully refreshed from Google Patents.
US2834181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jet propulsion unit comprising pulse jet units having ejector tubes within a ramjet unit
Assignee: Safran Aircraft Engines SAS
•
Filing: 1951-06-05
•
Granted: 1958-05-13
•
Expires: 1971-06-05
Abstract
No abstract record available.
Inventors
- 👤 Francois G Paris
- 👤 Foll Jean Le
- 👤 Bertin Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:18
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; F02K7/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2439273A
Cited
US2588532A
Cited
US2375180A
Cited
GB597915A
Cited
GB583341A
Cited
US2639580A
Cited
US2613496A
Cited
US2612748A
Cited
US2574460A
Cited
US2612749A
Cited
US2675196A
Cited
US2482505A
Cited
US2740254A
Cited
US2591676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |